[PATCH v3 4/6] gdb/aarch64: core file support for FPMR

[<Ezra.Sitorus@arm.com>]

From: Ezra Sitorus <ezra.sitorus@arm.com>

Add support for FPMR dumps/reads for core files.
---
Changes from v1->v2:
* Addressed comments/whitespace/formatting issues.
* gdb/arch/aarch64.h: operator() takes fpmr into account now.
* Defined HWCAP2_FPMR in gdb/arch/aarch64.h

Changes from v2-v3:
* Formatting fixes.
* Moved initialisation of fpmr variables closer to where they are used.

Ezra

 gdb/aarch64-linux-tdep.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 5346ae39eda..6966dc1ab0f 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -1635,6 +1635,23 @@ aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
 	}
     }
 
+  if (tdep->has_fpmr ())
+    {
+      const struct regcache_map_entry fpmr_regmap[] =
+	{
+	  { 1, tdep->fpmr_regnum, sizeof (uint64_t) },
+	  { 0 }
+	};
+
+      const struct regset aarch64_linux_fpmr_regset =
+	{
+	  fpmr_regmap, regcache_supply_regset, regcache_collect_regset
+	};
+
+      cb (".reg-aarch-fpmr", sizeof (uint64_t), sizeof (uint64_t),
+	  &aarch64_linux_fpmr_regset, "FPMR", cb_data);
+    }
+
   if (tdep->has_pauth ())
     {
       /* Create this on the fly in order to handle the variable location.  */
-- 
2.45.2